Garden tool and adjusting device thereof

ABSTRACT

The invention relates to an adjusting device, which includes a lifting device for adjusting a position of an attachment in use and a locking mechanism. The lifting device is switched between a locking position and a free position under a locking action of the locking mechanism, the lifting device drives the attachment to move to a first position when the lifting device is in the locking position; and the lifting device drives the attachment to move to a second position so as to work when the lifting device is in the free position. The adjusting device of the present invention has a simple structure, a low production cost, an easy maintenance, and a garden tool using the adjusting device can conveniently and quickly adjust the position of the attachment connected to the garden tool.

CROSS-REFERENCE TO RELATED INVENTIONS

This invention is a US application which claims the priority of CNapplication Serial No. 201910874494.9, filed on Sep. 17, 2019, thedisclosures of which are hereby incorporated by reference in theirentirety.

TECHNICAL FIELD

The invention relates to a garden tool having an adjusting device foradjusting the position of an attachment connected to the garden tool.

BACKGROUND ART

A garden tool usually has only a single function module, so that the useof the garden tool is limited by seasons, for example, a lawn mower isusually in an idle state in winter, that greatly reduces the usage rateof the garden tool.

In order to improve utilization rate of the garden tool, attachmentswhich are able to be attached to the garden tool are developed, such asa snow thrower which is able to be attached to the lawn mower, so thatthe lawn mower can perform snow removing work in winter.

However, the attachment is required to adjust its position according toactual situation in use, so as to ensure its use effect. For example,the snow thrower needs to be closed to the ground to complete the gardenwork in use and it needs to be lifted for a long time when it needs toovercome obstacles. Hence, it is a focus in development and in use toprovide an adjusting device which can conveniently and quickly adjustthe position of the attachment.

In view of the above, it is desirable to provide an adjusting device toovercome the above problems.

SUMMARY OF INVENTION

The present invention provides an adjusting device which canconveniently and quickly adjust a use position of an attachmentconnected to the garden tool to improve the practicability of the gardentool.

To achieve the above object, the present invention adopts the followingtechnical solution: an adjusting device for adjusting the position of anattachment connected to a garden tool, comprising: a lifting deviceswitched between a locking and a free position for adjusting theposition of the attachment; and a locking mechanism for locking with thelifting device; wherein the lifting device drives the attachment to moveto a first position when the lifting device is in the locking position;and the lifting device drives the attachment to move to a secondposition so as to work when the lifting device is in the free position.

As a further improvement of the invention, the adjusting device furthercomprises a assisting mechanism arranged in a staggered mode with thelifting device, the assisting mechanism is provided with a retainingportion and a boosting portion, one end of the boosting portion isconnected and positioned with the retaining portion, and the other endof the boosting portion is connected to the attachment.

As a further improvement of the invention, the lifting device comprisesa shaft assembly, a pedal assembly rotatably mounted to the shaftassembly 11, and a connecting portion for connecting the pedal portionand the attachment.

As a further improvement of the invention, the pedal portion comprises apedal body and a pedal bracket connected to the pedal body, and thepedal body is rotationally retained to the connecting portion via thepedal bracket.

As a further improvement of the invention, the locking mechanismcomprises a fixing portion, a locking portion and a reset mechanismconnecting the fixing portion and the locking portion, one end of thelocking portion is rotatably connected with the fixing portion, and theother end of the locking portion is provided with a toggle structureused for separate the locking mechanism from the pedal assembly, twoends of the reset mechanism fix to the fixing portion and the lockingportion respectively.

As a further improvement of the invention, the locking portion islocated beside the pedal assembly, and the toggle structure is formed bythe other end of the locking portion away from the fixing portionextending toward the pedal assembly.

As a further improvement of the invention, the locking portion isprovided with a holding protrusion toward the pedal assembly, and thepedal assembly is provided with a holding member corresponding to theholding protrusion on a side thereof closed to the locking portion.

To achieve the above object, the present invention also adopts thefollowing technical solution: a garden tool, comprising: a driving body;an attachment connected to the driving body; and an adjusting deviceadjusting the position of the attachment, the adjusting devicecomprising a lifting device and a locking mechanism, the lifting devicebeing switched between a locking position and a free position under alocking action of the locking mechanism, the lifting device driving theattachment to move to a first position when the lifting device is in thelocking position, and the lifting device driving the attachment to moveto a second position when the lifting device is in the free position.

As a further improvement of the invention, the adjusting device furthercomprises a assisting mechanism arranged in a staggered mode with thelifting device, the assisting mechanism is provided with a retainingportion and a boosting portion, one end of the boosting portion isconnected and positioned with the retaining portion, and the other endof the boosting portion is connected to the attachment.

As a further improvement of the invention, the lifting device comprisesa shaft assembly, a pedal assembly rotatably connected to the shaftassembly, and a connecting portion for connecting the pedal assembly andthe attachment.

As a further improvement of the invention, the pedal assembly comprisesa pedal body and a pedal bracket connected to the pedal body, and thepedal body is fixedly connected to the shaft assembly via the pedalbracket.

As a further improvement of the invention, the locking mechanismcomprises a fixing portion, a locking portion and a reset mechanismconnecting the fixing portion and the locking portion, one end of thelocking portion is rotatably connected with the fixing portion, and theother end of the locking portion is provided with a toggle structureused for separate the locking mechanism from the pedal assembly, twoends of the reset mechanism fix to the fixing portion and the lockingportion respectively.

As a further improvement of the invention, the locking portion islocated beside the pedal assembly, and the toggle structure is formed bythe other end of the locking portion away from the fixing portionextending toward the pedal assembly.

As a further improvement of the invention, the locking portion isprovided with a holding protrusion toward the pedal assembly, and thepedal assembly is provided with a holding member corresponding to theholding protrusion on a side thereof closed to the locking portion.

As a further improvement of the invention, the adjusting device furthercomprises a plurality of assisting mechanism arranged in pairs, theassisting mechanisms are symmetrically disposed on two sides of themounting mechanism, and the assisting mechanisms has a retaining portionconnected to the frame or the mounting mechanism.

As a further improvement of the invention, the driving body is a gardendriving body with garden working function; the attachment is a gardenworking component capable of realizing garden working.

The above general description and the following detailed description areintended to be illustrative and not restrictive.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view of an adjusting device mounted with theattachment according to one embodiment of the present invention.

FIG. 2 is a perspective view of a lifting device of the adjusting deviceshown in FIG. 1.

FIG. 3 is an exploded view of a lifting device shown in FIG. 2.

FIG. 4 is a perspective view of a pedal assembly of the lifting deviceshown in FIG. 3.

FIG. 5 is a perspective view of a locking mechanism shown in FIG. 1.

FIG. 6 is an exploded view of a latching mechanism shown in FIG. 5.

FIG. 7 is an exploded view of an assisting mechanism in FIG. 1.

FIG. 8 is a perspective view of a garden tool according to presentinvention.

FIG. 9 is a top view of the garden tool in FIG. 8.

DESCRIPTION OF EMBODIMENT

The exemplary embodiment will be described in detail herein, and theembodiment is illustrated in the accompanying drawings. When thefollowing description refers to the drawings, unless otherwiseindicated, the same numbers in different drawings indicate the same orsimilar elements. The embodiment described in the following exemplaryembodiment does not represent all embodiments consistent with thepresent invention. On the contrary, they are only examples of devices,systems, machines and methods consistent with some aspects of theinvention as detailed in the appended claims.

Referring to FIG. 1 and FIG. 8, an adjusting device 100 adapted for agarden tool 300 is shown. The adjusting device 100 comprises a liftingdevice 1 for lifting the attachment 200 in vertical direction and alocking mechanism 2 locking with the lifting device 1.

Referring to FIG. 2 in conjunction with FIG. 1, the lifting device 1comprises a shaft assembly 11, a pedal assembly 12 rotatably mounted tothe shaft assembly 11 and a connecting portion 13 for rotatablyconnecting the pedal assembly 12 and the attachment 200. When step thepedal assembly 12, the pedal assembly 12 rotates around the shaftassembly 11 and drives the connecting portion 13 to move upwardly,thereby lifting the attachment 200 to move upwardly. In a preferredembodiment of the present invention, the shaft assembly 11 comprises aconnecting shaft (not shown), a positioning bearing 111 and a snapspring 112 mounted to the connecting shaft. The pedal assembly 12 isfixedly connected to the positioning bearing 111 and locked by the snapspring 112, so that on the one hand the pedal assembly 12 can rotatearound the connecting shaft; on the other hand, the lateral movement ofthe pedal assembly 12 relative to the shaft is prevented and a stableconnection between the pedal assembly 12 and the shaft assembly 11 isachieved.

The pedal assembly 12 is configured to facilitate the operation of theadjusting device 100, and specifically, the pedal assembly 12 comprisesa pedal body 121 and a pedal bracket 122 connected to the pedal body121, in this embodiment, the pedal body 121 is substantiallyplate-shaped and obliquely connected to an end of the pedal bracket 122.

It should be noted that, in the drawings of this embodiment of presentinvention, only take the pedal body 121 as an example for illustration,that is, in other embodiments of the present invention, the specificshape of the pedal body 121 can be selected according to actual needs.

One end of the pedal bracket 122 is connected to the pedal body 121, andthe other end of the pedal bracket 122 is rotatably mounted to the shaftassembly 11 to support the pedal body 121, the connecting portion 13 isconnected to the pedal bracket 122, so that the connecting portion 13can move under a cooperation of the pedal body 121 and the pedal bracket122, and further drive the attachment 200 connected to the connectingportion 13 to switch between a first position and a second position.

In a preferred embodiment of the present invention, the pedal bracket122 has an extending arm 1221 for connecting to the pedal body 121, acantilever 1222 connected to an end of the extending arm 1221 away fromthe pedal body 121, and a U-shaped arm 1223 connected to an end of thecantilever 1222 away from the pedal body 121. An extending direction ofthe pedal assembly 12 in a horizontal plane is defined as a firstdirection, and an extending direction of the pedal assembly 12 in avertical direction perpendicular to the horizontal plane is defined as asecond direction, then the extending arm 1221 is used for increasing anextending length of the pedal bracket 122 in the first direction toincrease a rotating moment arm of the pedal assembly 12, so that thepedal body 121 is conveniently stepped with a small force to drive theconnecting portion 13 to move upwardly and further pull the attachment200 to move upwardly.

Furthermore, the cantilever 1222 is used to increase the extendinglength of the pedal bracket 122 both in the first direction and thesecond direction, by such arrangement, the moment arm of the pedalportion 12 for pulling the connecting portion 13 is increased on the onehand, and a moving distance of the pedal assembly 12 in the seconddirection is increased on the other hand, thus a displacement height ofthe attachment 200 in the second direction (that is a distance betweenthe first position and the second position) is effectively increased.

It should be noted that, in the present embodiment, the extending arm1221 and the cantilever 1222 are two separate structures that areseparately disposed and then connected by welding, but in otherembodiments of the present invention, the extending arm 1221 may beformed by extending the cantilever 1222 in the first direction, and inthis case, the extending arm 1221 and the cantilever 1222 are integrallyformed.

The U-shaped arm 1223 is connected to an end of the cantilever 1222 awayfrom the pedal body 121 for connecting the shaft assembly 11 11 and theconnecting portion 13. Specifically, the shaft assembly 11 and theconnecting portion 13 are respectively connected to two opposite wallsof the U-shaped arm 1223, by such arrangement, the pedal bracket 122 canrotate around the connecting shaft of the shaft assembly 11 on the onehand; the shaft assembly 11 and the connecting portion 13 are avoided tobe simultaneously connected to adjacent positions on the pedal bracket122 so as to ensure an use strength and a service life of the pedalbracket 122.

The connecting portion 13 is used for connecting the lifting device 1and the attachment 200, and in this embodiment, the connecting portion13 is provided with a pulling rod 131 and a first rotating assembly 132for connecting the pulling rod 131 and the pedal assembly 12.Specifically, the first rotating assembly 132 has two first pressingplate assemblies 1321 and a first rotating shaft 1322 rotatablyassembled between the two first pressing plate assemblies 1321, one endof the pulling rod 131 is rotatably connected to the attachment 200 viaa sleeve (not shown), and the other end of the pulling rod 131penetrates through the first rotating shaft 1322 and is connected andpositioned to the first rotating assembly 132 by a fastening member1311.

Furthermore, a length of the pulling rod 131 penetrating through thefirst rotating shaft 1322 is adjustable, by such arrangement, the firstposition of the attachment 200 connected to the pulling rod 131 can beadjusted by adjusting the penetrating length of the pulling rod 131, sothat it is convenient to integrally adjust the position of theattachment 200 so as to improve using convenience of the adjustingdevice 100. Preferably, a fastening thread is provided at an end of thepulling rod 131 penetrating the first rotating shaft 1322, and thefastening member 1311 is a nut corresponding to the fastening thread.

Referring to FIG. 1, FIG. 5 and FIG. 6, the locking mechanism 2 is usedfor defining a locking position of the lifting device 1, and has afixing portion 21, a locking portion 22, and a reset mechanism 25connecting the fixing portion 21 and the locking portion 22. The fixingportion 21 is used for fixing an installation position of the lockingmechanism 2, one end of the locking portion 22 is rotatably connectedwith the fixing portion 21, and the other end of the locking portion 22is provided with a toggle structure 221 for separating the lockingmechanism 2 from the pedal assembly 12.

Specifically, the locking mechanism 2 further has a bush assembly 23rotatably connecting the fixing portion 21 and the locking portion 22,the bush assembly 23 has a main body 231 and a locking member 232,furthermore, the fixing portion 21 and the locking portion 22 arefurther provided with through holes (not numbered) corresponding to themain body 231, the main body 231 penetrates through the fixing portion21 and the locking portion 22 via the through holes, and the lockingmember 232 penetrates through the main body 231 and abuts against bothsides of the fixing portion 21 and the locking portion 22, so that thelocking portion 22 can rotate around an axis of the main body 231, andat the same time, the locking portion 22 and the fixing portion 21 areprevented from being separated from each other, thereby ensuring thestability of connection and installation of the locking mechanism 2.Preferably, locking member 232 is a bolt assembly.

The toggle structure 221 is disposed on an end of the locking portion 22away from the fixing portion 21, in a preferred embodiment of thepresent invention, the locking portion 22 is disposed in a plate shapeand located beside the pedal assembly 12, the toggle structure 221 isformed by bending and extending from a side of the locking portion 22toward the lifting device 1, and when the lifting device 1 is located atthe locking position, the toggle structure 221 is disposed beyond anupper surface of the pedal body 121 from a side edge of the pedal body121, so that an operator can separate the toggle structure 221 and thepedal body 121 by toggling the toggle structure 221, thereby effectivelyimproving the convenience of the adjusting device 100.

Furthermore, the locking portion 22 is further provided with a holdingprotrusion 222, the pedal assembly 12 is provided with a holding member123 corresponding to the holding protrusion 222, and the lockingmechanism 2 controls the lifting device 1 to be positioned at thelocking position by the cooperation of the holding protrusion 222 andthe holding member 123. Specifically, the holding protrusion 222 isprovided on the locking portion 22 and extends toward the pedal assembly12, and the holding member 123 is provided on a side of the pedalassembly 12 adjacent to the locking portion 22.

In a preferred embodiment of the present invention, the locking portion22 is located between the pedal body 121 and the shaft assembly 11, theholding member 123 is disposed on one side of the extending arm 1221adjacent to the locking portion 22, and the holding protrusion 222 andthe locking portion 22 are integrally formed, so as to ensure a stableengagement between the holding protrusion 222 and the holding member123, reduce an occupied space when the lifting device 1 and the lockingmechanism 2 are combined, facilitate an assembly of the adjusting device100, and achieve a purpose of improving the practicability of theadjusting device 100.

In another preferred embodiment of the present invention, the togglestructure 221 extends beyond the upper surface of the pedal body 121from a side edge of the pedal body 121 and extends along the uppersurface of the pedal body 121, so that when the lifting device 1 is inthe locking position and the holding protrusion 222 latches the holdingmember 123, the toggle structure 221 also latches the edge of the pedalbody 121 to help limit the lifting device 1 in the locking position, soas to ensure the stability of the engagement between the lifting device1 and the locking mechanism 2, and improve the safety of the adjustingdevice 100.

In another preferred embodiment of the present invention, the pedalassembly 12 can also be provided without the holding member 123, in thisembodiment, the toggle structure 221 latches the side edge of the pedalbody 121.

The reset mechanism 25 is used for returning the connection fixingportion 21 and the locking portion 22, specifically, the locking portion22 is rotatable towards a side away from the pedal bracket 122 under theurging action of the pedal assembly 12, and catches the pedal assembly12 or returns to the initial position under the returning action of thereset mechanism 25. The fixing portion 21 and the locking portion 22 areboth provided with a positioning protrusion 24 for connecting and fixingthe reset mechanism 25, two ends of the reset mechanism 25 fix to thepositioning protrusion 24 disposed on the fixing portion 21 and thelocking portion 22 respectively, so that locking portion 22 can returnto the initial position or latch with the pedal assembly 12 in timeunder an action of the reset mechanism 25, furthermore, the positioningprotrusion 24 of the fixing portion 21 can limit the locking portion 22to avoid the locking portion 22 from excessively rotating towards a sidetowards of pedal bracket 122, and ensure use stability of the adjustingdevice 100.

In a preferred embodiment of the present invention, the reset mechanism25 is a reset spring, but in other embodiments of the present invention,the reset mechanism 25 may also be a reset mechanism having a resetfunction, such as a hydraulic elastic rod, i.e., the reset spring istaken as the reset mechanism 25 for illustration only, and should not betaken as a limitation.

The adjusting device 100 is further provided with a assisting mechanism3 which is arranged in a staggered manner with the lifting device 1, toelastically connect the attachment 200 and reduce a load-bearing tensionof the lifting device 1 in use, this can further improve a useconvenience of the adjusting device 100. As shown in FIG. 1 and FIG. 7,the assisting mechanism 3 has a retaining portion 31 and a boostingportion 32. The retaining portion 31 includes two second pressing plateassemblies 311 and a second rotating shaft 312 rotatably secured betweenthe two second pressing plate assemblies 311. One end of the boostingportion 32 connects to the second rotating shaft 312, and the other endof the boosting portion 32 connects to the attachment 200.

The boosting portion 32 has a linking rod 321 and an elastic booster 322connected to the linking rod 321, the linking rod 321 is used to connectthe retaining portion 31 and the boosting portion 32. Specifically, oneend of the linking rod 321 penetrates through the second rotating shaft312 and is positioned with the second rotating shaft 312 via a lockingmember 323. A length of the linking rod 321 penetrating through thesecond rotating shaft 312 is adjustable, which facilitates to adjust anactual length of the assisting mechanism 3 3 according to the specificinstallation position of the adjusting device 100.

The elastic booster 322 is connected to an end of the linking rod 321away from the second rotating shaft 312, and in a preferred embodimentof the present invention, the elastic booster 322 is a spring, and isprovide hooks for connecting the linking rod 321 and the attachment 200at two ends thereof, by such arrangement, it is facilitate to usedifferent elastic booster 322 in different types according to a weightof the attachment 200 and a distance between the adjusting device 100and the attachment 200.

It should be noted that, in the present invention, the elastic booster322 is only taken as a spring and connects to the retaining portion 31via the linking rod 321 for example, in other embodiments of the presentinvention, the elastic booster 322 may also be another structure thatcan elastically connects to the attachment 200 and reduce theload-bearing tension of the lifting device 1 in use. The linking rod 321may also be another connecting structure for connecting the retainingportion 31 and the elastic booster 322, that is, the specific structuresof the elastic booster 322 and the linking rod 321 mentioned in thedescription of the invention are only exemplary and should not belimited thereto.

When operate the adjusting device 100 of the present invention, step thepedal body 121 to control the pedal body 121 and the pedal bracket 122to rotate about the connecting shaft of the shaft assembly 11, then thelocking portion 22 is further pushed to rotate toward the side away fromthe pedal bracket 122. Continue to step the pedal body 121, the lockingportion 22 drives the holding protrusion 222 disposed on the lockingportion 22 to latch with the holding member 123 under the action of thereset mechanism 25. At that moment, the toggle structure 221 protrudesbeyond (or protrudes beyond and latches) the edge of the pedal body 121,so as to lock the lifting device 1 at the locking position by thelocking mechanism 2, and further position the attachment 200 at thefirst position, so that the attachment 200 stays in the lifted state fora long time, without the need to step on the pedal body 121 for a longtime. When the attachment 200 is in the lifted state, the attachment 200can be far away from the ground to easily overcome obstacles on theground.

When the attachment 200 is required to return to the second position,the operator can do so by disengaging the locking mechanism 2, whichlatching with the lifting device 1. Specifically, when the attachment200 returns to the second position, firstly, toggle the toggle structure221 protruding from (or protruding from and latching with) the edge ofthe pedal body 121 to separate the locking portion 22 from the pedalassembly 12, and then the connection portion 13 pulls the pedal assembly12 to rotate around the connecting shaft of the shaft assembly 11 underthe action of the gravity of the attachment 200, till the lifting device1 rotates from the locking position to a free position, and at thattime, the attachment 200 returns to the second position, so that theattachment 200 can complete the subsequent use or movement.

Furthermore, the adjusting device 100 of the present invention can alsoselectively install the assisting mechanism 3 according to theself-gravity of the attachment 200. Specifically, the retaining portion31 of the assisting mechanism 3 and the connecting portion 13 of thelifting device 1 is disposed in a staggered manner, so as to assist thelifting device 1 to share a pulling force when pulling the attachment200 and the self-gravity of the attachment 200, and when the attachment200 is located at the second position, the boosting portion 32 is in astretching state to share the gravity of the attachment 200, so as tomove the attachment 200 from the second position to the first positionby conveniently stepping on the pedal assembly 12 with a small force.Furthermore, when the attachment 200 is in the first position, theboosting portion 32 is in a natural extension or tension state, so thatthe boosting portion 32 can assist the lifting device 1 to control theattachment 200 to slowly return to the second position from the firstposition, that can prevent the lifting device 1 from breaking under thetension action of the attachment 200, and ensure the safety of theadjusting device 100 of the present invention.

Referring to FIG. 8 and FIG. 9 in combination with FIG. 1 to FIG. 5, thegarden tool 300 according to the present invention is shown. The gardentool 300 comprises a driving body 301, an attachment 200 detachablycoupled to the driving body 301, and the adjusting device 100 forcontrolling the working position of the attachment 200.

The driving body 301 is provided with a frame 302 for attaching theattachment 200, and the attachment 200 and the adjusting device 100 areboth located in front of the frame 302 in a forward direction of thedriving body 301. Furthermore, the frame 302 is provided with a mountingmechanism 303 for connecting the driving body 301 and the attachment200.

Specifically, the connecting shaft of the shaft assembly 11 is rotatablyconnected to the mounting mechanism 303, the lifting device 1 isconnected to the mounting mechanism 303 via the connecting shaft, theattachment 200 is fixedly mounted to the connecting shaft, thereby theattachment 200 is connected to the frame 302 via the mounting mechanism303. The locking mechanism 2 is fixed to the frame 302, and the lockingportion 22 is disposed beside the pedal bracket 122 of the liftingdevice 1 and between the pedal body 121 and the shaft assembly 11, so asto ensure that the adjusting device 100 has a small size and facilitatethe assembly and engagement of the adjusting device 100 with the drivingbody 301, on the basis of ensuring that the adjusting device 100controls the working position of the attachment 200.

In a preferred embodiment of the present invention, the assistingmechanisms 3 are disposed in pairs, a plurality of assisting mechanisms3 are symmetrically disposed on two sides of the mounting mechanism 303,and the retaining portion 31 of each assisting mechanism 3 is connectedto the frame 302 or mounted to the mounting mechanism 303 for assistingthe lifting device 1 to complete the position switching of theattachment 200. Of course, in other embodiments of the presentinvention, the assisting mechanism 3 may be provided independently or ina singular form, it is just needed to ensure the stability of theoperation of the adjusting device 100.

Furthermore, the driving body 301 of the present invention is a mowerhaving a grass cutting assembly 304 for performing grass cutting task,and the attachment 200 is a snow thrower for performing snow removingtask, so that the garden tool 300 can perform grass cutting tasks inspring, summer, and in autumn and can also perform snow removing tasksin winter, thereby effectively improving the practicability of thegarden tool 300, and simultaneously reducing the maintenance times ofthe garden tool 300 during non-use period and effectively reducing themaintenance cost of the garden tool 300.

Of course, in other embodiments of the present invention, the drivingbody 301 may also be other kinds of garden working components withgarden working functions, and the garden working component may be ariding type garden working component or a walking type garden workingcomponent. Furthermore, the driving body 301 may also be other drivingcomponent without garden working functions, such as a tractor and otherdriving component capable of automatically or manually driving.Meanwhile, the attachment 200 may also be other garden working componentfor realizing garden working and having power, that is, the specifickinds and specific arrangement forms of the driving body 301 and theattachment 200 in the present invention may be selected according toactual needs, which is not limited thereto.

In summary, the adjusting device 100 of the present invention isprovided with the locking mechanism 2 latching with the lifting device1, so that the adjusting device 100 is switched between the lockingposition and the free position, and further controls the attachment 200connected to the driving body 301 to be switched between the firstposition and the second position, so as to facilitate the transfer orthe use of the attachment 200. That effectively improves the convenienceof the garden tool 300 using the adjusting device 100. Furthermore, andthe adjusting device 100 and the garden tool 300 has a simple structureand an assembly, that reduces the manufacturing cost and the maintenancecost of the adjusting device 100 and the garden tool 300 using theadjusting device 100.

The above embodiment is only used to illustrate the present inventionand not to limits the technical solutions described in the presentinvention. The understanding of this specification should be based onthose skilled in the art, although the present invention has beendescribed in detail with reference to the above embodiment. However,those skilled in the art should understand that those skilled in the artcan still modify or equivalently replace the present invention, and alltechnical solutions and improvements that do not depart from the spiritand scope of the present invention should be within the scope of theclaims of the invention.

We claims:
 1. An adjusting device for adjusting the position of anattachment connected to a garden tool, comprising: a lifting deviceswitched between a locking and a free position for adjusting theposition of the attachment; and a locking mechanism for locking with thelifting device; wherein the lifting device drives the attachment to moveto a first position when the lifting device is in the locking position;and the lifting device drives the attachment to move to a secondposition so as to work when the lifting device is in the free position.2. The adjusting device according to claim 1, wherein the adjustingdevice further comprises a assisting mechanism arranged in a staggeredmode with the lifting device, the assisting mechanism is provided with aretaining portion and a boosting portion, one end of the boostingportion is connected and positioned with the retaining portion, and theother end of the boosting portion is connected to the attachment.
 3. Theadjusting device according to claim 1, wherein the lifting devicecomprises a shaft assembly, a pedal assembly rotatably mounted to theshaft assembly 11, and a connecting portion for connecting the pedalportion and the attachment.
 4. The adjusting device according to claim3, wherein the pedal assembly comprises a pedal body and a pedal bracketconnected to the pedal body, and the pedal body is fixedly connected tothe shaft assembly via the pedal bracket.
 5. The adjusting deviceaccording to claim 3, wherein the locking mechanism comprises a fixingportion, a locking portion and a reset mechanism connecting the fixingportion and the locking portion, one end of the locking portion isrotatably connected with the fixing portion, and the other end of thelocking portion is provided with a toggle structure used for separatethe locking mechanism from the pedal assembly, two ends of the resetmechanism fix to the fixing portion and the locking portionrespectively.
 6. The adjusting device according to claim 5, wherein thelocking portion is located beside the pedal assembly, and the togglestructure is formed by the other end of the locking portion away fromthe fixing portion extending toward the pedal assembly.
 7. The adjustingdevice according to claim 5, wherein the locking portion is providedwith a holding protrusion toward the pedal assembly, and the pedalassembly is provided with a holding member corresponding to the holdingprotrusion on a side thereof closed to the locking portion.
 8. A gardentool, comprising: a driving body; an attachment connected to the drivingbody; and an adjusting device adjusting the position of the attachment,the adjusting device comprising a lifting device and a lockingmechanism, the lifting device being switched between a locking positionand a free position under a locking action of the locking mechanism, thelifting device driving the attachment to move to a first position whenthe lifting device is in the locking position, and the lifting devicedriving the attachment to move to a second position when the liftingdevice is in the free position; wherein the driving body is providedwith a frame used for attaching the attachment, the attachment and thelifting device are connected with the frame via a mounting mechanism andare both located in front of the frame in a forward direction of thedriving body.
 9. The garden tool according to claim 8, wherein theadjusting device further comprises a assisting mechanism arranged in astaggered mode with the lifting device, the assisting mechanism isprovided with a retaining portion and a boosting portion, one end of theboosting portion is connected and positioned with the retaining portion,and the other end of the boosting portion is connected to theattachment.
 10. The garden tool according to claim 8, wherein thelifting device comprises a shaft assembly, a pedal assembly rotatablyconnected to the shaft assembly, and a connecting portion for connectingthe pedal assembly and the attachment.
 11. The garden tool according toclaim 10, wherein the pedal assembly comprises a pedal body and a pedalbracket connected to the pedal body, and the pedal body is fixedlyconnected to the shaft assembly via the pedal bracket.
 12. The gardentool according to claim 10, wherein the locking mechanism comprises afixing portion, a locking portion and a reset mechanism connecting thefixing portion and the locking portion, one end of the locking portionis rotatably connected with the fixing portion, and the other end of thelocking portion is provided with a toggle structure used for separatethe locking mechanism from the pedal assembly, two ends of the resetmechanism fix to the fixing portion and the locking portionrespectively.
 13. The garden tool according to claim 12, wherein thelocking portion is located beside the pedal assembly, and the togglestructure is formed by the other end of the locking portion away fromthe fixing portion extending toward the pedal assembly.
 14. The gardentool according to claim 12, wherein the locking portion is provided witha holding protrusion toward the pedal assembly, and the pedal assemblyis provided with a holding member corresponding to the holdingprotrusion on a side thereof closed to the locking portion.
 15. Thegarden tool according to claim 8, wherein the adjusting device furthercomprises a plurality of assisting mechanism arranged in pairs, theassisting mechanisms are symmetrically disposed on two sides of themounting mechanism, and the assisting mechanisms has a retaining portionconnected to the frame or the mounting mechanism.
 16. The garden toolaccording to claim 8, wherein the driving body is a garden driving bodywith garden working function; the attachment is a garden workingcomponent capable of realizing garden working.